Prefix Pro's

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Across
  1. 4. You but in a conversation.
  2. 5. you let somebody join in with a game.
  3. 7. Something is not correct.
  4. 9. What Wi-Fi gives you.
  5. 10. You are not kind to people.
  6. 13. No gravity.
  7. 14. The opposite of addition.
  8. 15. A man that has superpowers.
Down
  1. 1. A type of car.
  2. 2. You go invisible.
  3. 3. It does it by its self.
  4. 6. Stops you looking old.
  5. 8. You make it again.
  6. 10. Something is not fair.
  7. 11. You don't like something or someone.
  8. 12. You send it again.